/*
 * Copyright (c) "Neo4j"
 * Neo4j Sweden AB [http://neo4j.com]
 *
 * This file is part of Neo4j.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package apoc;

import apoc.custom.CypherProcedures;
import apoc.custom.CypherProceduresHandler;
import apoc.load.LoadDirectory;
import apoc.load.LoadDirectoryHandler;
import apoc.ttl.TTLLifeCycle;
import apoc.uuid.Uuid;
import apoc.uuid.UuidHandler;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import org.neo4j.annotations.service.ServiceProvider;
import org.neo4j.graphdb.GraphDatabaseService;
import org.neo4j.internal.helpers.collection.MapUtil;
import org.neo4j.kernel.availability.AvailabilityListener;
import org.neo4j.kernel.internal.GraphDatabaseAPI;
import org.neo4j.kernel.lifecycle.Lifecycle;

@ServiceProvider
public class ExtendedApocGlobalComponents implements ApocGlobalComponents {

    private final Map<GraphDatabaseService, CypherProceduresHandler> cypherProcedureHandlers =
            new ConcurrentHashMap<>();

    @Override
    public Map<String, Lifecycle> getServices(GraphDatabaseAPI db, ApocExtensionFactory.Dependencies dependencies) {

        CypherProceduresHandler cypherProcedureHandler = new CypherProceduresHandler(
                db,
                dependencies.scheduler(),
                dependencies.apocConfig(),
                dependencies.log().getUserLog(CypherProcedures.class),
                dependencies.globalProceduresRegistry());
        cypherProcedureHandlers.put(db, cypherProcedureHandler);

        return MapUtil.genericMap(
                "ttl",
                        new TTLLifeCycle(
                                dependencies.scheduler(),
                                db,
                                dependencies.ttlConfig(),
                                dependencies.log().getUserLog(TTLLifeCycle.class)),
                "uuid",
                        new UuidHandler(
                                db,
                                dependencies.databaseManagementService(),
                                dependencies.log().getUserLog(Uuid.class),
                                dependencies.apocConfig(),
                                dependencies.scheduler(),
                                dependencies.pools()),
                "directory",
                        new LoadDirectoryHandler(
                                db, dependencies.log().getUserLog(LoadDirectory.class), dependencies.pools()),
                "cypherProcedures", cypherProcedureHandler);
    }

    @Override
    public Collection<Class> getContextClasses() {
        return List.of(CypherProceduresHandler.class, UuidHandler.class, LoadDirectoryHandler.class);
    }

    @Override
    public Iterable<AvailabilityListener> getListeners(
            GraphDatabaseAPI db, ApocExtensionFactory.Dependencies dependencies) {
        CypherProceduresHandler cypherProceduresHandler = cypherProcedureHandlers.get(db);
        return cypherProceduresHandler == null
                ? Collections.emptyList()
                : Collections.singleton(cypherProceduresHandler);
    }
}
